Isotopies of Legendrian 1-knots and Legendrian 2-tori

dc.creatorEkholm, Tobias
dc.creatorKalman, Tamas
dc.date2007-10-24
dc.date.accessioned2026-07-07T08:38:19Z
dc.date.available2026-07-07T08:38:19Z
dc.descriptionWe construct a Legendrian 2-torus in the 1-jet space of $S^1\times\R$ (or of $\R^2$) from a loop of Legendrian knots in the 1-jet space of $\R$. The differential graded algebra (DGA) for the Legendrian contact homology of the torus is explicitly computed in terms of the DGA of the knot and the monodromy operator of the loop. The contact homology of the torus is shown to depend only on the chain homotopy type of the monodromy operator. The construction leads to many new examples of Legendrian knotted tori. In particular, it allows us to construct a Legendrian torus with DGA which does not admit any augmentation (linearization) but which still has non-trivial homology, as well as two Legendrian tori with isomorphic linearized contact homologies but with distinct contact homologies.
dc.description45 pages, 12 figures
dc.identifierhttps://arxiv.org/abs/0710.4382
dc.identifierhttp://arxiv.org/abs/0710.4382
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/140689
dc.subjectSymplectic Geometry
dc.subject57R17; 53D40
dc.titleIsotopies of Legendrian 1-knots and Legendrian 2-tori
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